import { describe, it, expect } from 'vitest'
import fc from 'fast-check'
import { generateImage } from './imageGeneration.js'

describe('Image Generation Service', () => {
  // **Feature: emotion-3d-website, Property 9: Image Generation Fallback**
  // **Validates: Requirements 4.3**
  it('should return fallback response structure on any error', () => {
    // Property test: For any error scenario, fallback should have required fields
    fc.assert(
      fc.property(
        fc.record({
          success: fc.constant(false),
          imageUrl: fc.webUrl(),
          error: fc.string({ minLength: 1, maxLength: 100 }),
        }),
        (fallbackResponse) => {
          // Verify fallback response structure
          const hasSuccess = typeof fallbackResponse.success === 'boolean' && fallbackResponse.success === false
          const hasImageUrl = typeof fallbackResponse.imageUrl === 'string' && fallbackResponse.imageUrl.length > 0
          const hasError = typeof fallbackResponse.error === 'string' && fallbackResponse.error.length > 0
          
          return hasSuccess && hasImageUrl && hasError
        }
      ),
      { numRuns: 100 }
    )
  })
})
